nonblockingobj.java

MPI for java for Distributed Programming

import mpi.*;
import java.util.Arrays;

public class NonBlockingObj {
	public NonBlockingObj(String args[]) throws Exception{
		
		Request req;
		MPI.Init(args);

		java.util.Vector vector1 = null;
		java.util.Vector vector = new java.util.Vector();
		
		for(int i=0 ; i<10 ; i++) {
			vector.add(i+"");
		}
		
		Object [] source = new Object[5];
		source[0] = vector;
		source[1] = vector;
		source[2] = vector;
		source[3] = vector;
		source[4] = vector;
		
		Object [] dest = new Object[5];
		dest[0] = null; dest[1] = null; dest[2] = null; dest[3] = null; dest[4] = null;
																	
		if(MPI.COMM_WORLD.Rank() == 0) {
    			req = MPI.COMM_WORLD.Isend(source,0,5,MPI.OBJECT,1,999);
			System.out.println("req "+req);
			req.Wait();
			System.out.println("Isend Completed \n\n");
		}
         
        
        else if (MPI.COMM_WORLD.Rank() == 1) {			
		
		req = MPI.COMM_WORLD.Irecv(dest,0,5,MPI.OBJECT,0,999);
		req.Wait();

		if(Arrays.equals(source,dest)){		   
			System.out.println("\n#################"+
					"\n <<<<PASSED>>>> "+
					"\n################");
		} else {
			System.out.println("\n#################"+
					"\n <<<<FAILED>>>> "+
					"\n################");			
		}
       	}
       	
	MPI.COMM_WORLD.Barrier();
	MPI.Finalize();	
    }
    
    public static void main(String args[]) throws Exception{
    	NonBlockingObj test = new NonBlockingObj(args);
    }
}